package com.atguigu.gulimall.product.service.impl;

import com.atguigu.common.constant.ProductConstant;
import com.atguigu.gulimall.product.dao.AttrAttrgroupRelationDao;
import com.atguigu.gulimall.product.dao.AttrGroupDao;
import com.atguigu.gulimall.product.dao.CategoryDao;
import com.atguigu.gulimall.product.entity.*;
import com.atguigu.gulimall.product.service.CategoryService;
import com.atguigu.gulimall.product.vo.AttrGroupRelationVo;
import com.atguigu.gulimall.product.vo.AttrRespVo;
import com.atguigu.gulimall.product.vo.AttrVo;
import com.atguigu.gulimall.product.vo.SkuItemVo;
import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.AttrDao;
import com.atguigu.gulimall.product.service.AttrService;
import org.springframework.transaction.annotation.Transactional;


@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {

	@Autowired
	AttrAttrgroupRelationDao relationDao;

	@Autowired
	AttrGroupDao attrGroupDao;

	@Autowired
	CategoryDao categoryDao;

	@Autowired
	CategoryService categoryService;

	@Override
	public PageUtils queryPage(Map<String, Object> params) {
		IPage<AttrEntity> page = this.page(
				new Query<AttrEntity>().getPage(params),
				new QueryWrapper<AttrEntity>()
		);

		return new PageUtils(page);
	}


	@Transactional        //开启事务
	@Override
	public void saveAttr(AttrVo attr) {
		AttrEntity attrEntity = new AttrEntity();
		// attrEntity.setAttrName(attr.getAttrName());
		BeanUtils.copyProperties(attr, attrEntity);        //可以把attr的属性值赋给attrEntity  需保证字段一致
		//1、保存基本数据
		this.save(attrEntity);
		//2、保存关联关系
		if (attr.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() && attr.getAttrGroupId() != null) {
			AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
			relationEntity.setAttrGroupId(attr.getAttrId());
			relationEntity.setAttrId(attrEntity.getAttrId());
			relationDao.insert(relationEntity);
		}
	}

	@Override
	public PageUtils queryBaseAttrPage(Map<String, Object> params, Long catalogId, String type) {
		QueryWrapper<AttrEntity> queryWrapper =
				new QueryWrapper<AttrEntity>().eq("attr_type", "base".equalsIgnoreCase(type) ? ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() : ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());
		if (catalogId != 0) {
			queryWrapper.eq("catalog_id", catalogId);
		}
		String key = (String) params.get("key");
		if (!StringUtils.isEmpty(key)) {
			//attr_id attr_name
			queryWrapper.and((wrapper) -> {
				wrapper.eq("attr_id", key).or().like("attr_name", key);
			});
		}

		IPage<AttrEntity> page = this.page(
				new Query<AttrEntity>().getPage(params),
				queryWrapper
		);

		PageUtils pageUtils = new PageUtils(page);
		List<AttrEntity> records = page.getRecords();
		List<AttrRespVo> respVos = records.stream().map((attrEntity) -> {
			AttrRespVo attrRespVo = new AttrRespVo();
			BeanUtils.copyProperties(attrEntity, attrRespVo);

			//1、设置分类和分组的名字
			//如果是基本属性才需要设置分组
			if ("base".equalsIgnoreCase(type)) {
				AttrAttrgroupRelationEntity attrId = relationDao.selectOne(
						new QueryWrapper<AttrAttrgroupRelationEntity>()
								.eq("attr_id", attrEntity.getAttrId()));
				if (attrId != null && attrId.getAttrGroupId() != null) {
					AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrId.getAttrGroupId());
					attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
				}
			}

			CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatalogId());
			if (categoryEntity != null) {
				attrRespVo.setCatalogName(categoryEntity.getName());
			}
			return attrRespVo;
		}).collect(Collectors.toList());

		pageUtils.setList(respVos);

		return pageUtils;
	}

	@Override
	public AttrRespVo getAttrInfo(Long attrId) {

		AttrRespVo respVo = new AttrRespVo();
		AttrEntity attrEntity = this.getById(attrId);
		BeanUtils.copyProperties(attrEntity, respVo);

		//1、设置分组信息
		//销售属性不需要分组信息
		if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
			AttrAttrgroupRelationEntity attrgroupRelation = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrEntity.getAttrId()));
			if (attrgroupRelation != null) {
				respVo.setAttrGroupId(attrgroupRelation.getAttrGroupId());
				AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupRelation.getAttrGroupId());
				respVo.setGroupName(attrGroupEntity.getAttrGroupName());
			}
		}


		//2、设置分类信息
		Long catalogId = attrEntity.getCatalogId();
		Long[] catalogPath = categoryService.findcatalogPath(catalogId);
		respVo.setCatalogPath(catalogPath);

		CategoryEntity categoryEntity = categoryDao.selectById(catalogId);
		if (categoryEntity != null) {
			respVo.setCatalogName(categoryEntity.getName());
		}

		return respVo;
	}

	@Override
	public void updateAttr(AttrRespVo attr) {
		AttrEntity attrEntity = new AttrEntity();
		BeanUtils.copyProperties(attr, attrEntity);
		this.updateById(attrEntity);
		//1、修改分组关联
		if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {

			AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
			relationEntity.setAttrId(attr.getAttrId());
			relationEntity.setAttrGroupId(attr.getAttrGroupId());

			Integer count = relationDao.selectCount(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
			if (count > 0) {
				relationDao.update(relationEntity, new UpdateWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
			} else {
				relationDao.insert(relationEntity);
			}
		}
	}

	/**
	 * 根据分组id查找关联的所有基本属性
	 *
	 * @param attrgroupId
	 * @return
	 */
	@Override
	public List<AttrEntity> getRelationAttr(Long attrgroupId) {
		List<AttrAttrgroupRelationEntity> relationEntities = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_group_id", attrgroupId));

		List<Long> attrIds = relationEntities.stream().map((attr) -> {
			return attr.getAttrId();
		}).collect(Collectors.toList());

		if (attrIds == null || attrIds.size() == 0) {
			return null;
		}
		Collection<AttrEntity> attrEntities = this.listByIds(attrIds);
		return (List<AttrEntity>) attrEntities;
	}

	@Override
	public void deleteRelation(AttrGroupRelationVo[] vos) {
		//仅为单条删除  relationDao.delete(new QueryWrapper<>().eq("attr_id",1L).eq("attr_group_id",1L));
		//批量删除
		List<AttrAttrgroupRelationEntity> entities = Arrays.asList(vos).stream().map((items) -> {
			AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
			BeanUtils.copyProperties(items, relationEntity);
			return relationEntity;
		}).collect(Collectors.toList());
		relationDao.deleteBatchRelation(entities);

	}

	/**
	 * 获取当前分组没有关联的所有属性
	 *
	 * @param params
	 * @param attrgroupId
	 * @return
	 */
	@Override
	public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrgroupId) {
		//1、当前分组只能关联自己所属的分类里面的所有属性
		AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);
		Long catalogId = attrGroupEntity.getCatalogId();
		//2、当前分组只能关联别的分组没有引用的属性
		//2.1)、当前分类下的其他分组
		List<AttrGroupEntity> group = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>().eq("catalog_id", catalogId));
		List<Long> collect = group.stream().map((item) -> {
			return item.getAttrGroupId();
		}).collect(Collectors.toList());
		//2.2)、这些分组关联的属性
		List<AttrAttrgroupRelationEntity> groupId = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", collect));
		List<Long> attrIds = groupId.stream().map((item) -> {
			return item.getAttrId();
		}).collect(Collectors.toList());

		//2.3)、从当前分组的所有属性中移除这些属性；
		QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>().eq("catalog_id", catalogId).eq("attr_type", ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
		if (attrIds != null && attrIds.size() > 0) {
			wrapper.notIn("attr_id", attrIds);
		}

		String key = (String) params.get("key");
		if (!StringUtils.isEmpty(key)) {
			wrapper.and((w) -> {
				w.eq("attr_id", key).or().like("attr_name", key);
			});
		}
		IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), wrapper);

		PageUtils pageUtils = new PageUtils(page);

		return pageUtils;
	}

	@Override
	public List<Long> selectSearchAttrIds(List<Long> attrIds) {
		return  baseMapper.selectSearchAttrIds(attrIds);
	}


}
